00462pab a2200133 454500008004000000100002800040245015000068260000900218300001500227362000800242650002700250650001600277773003500293180718b2012 xxu||||| |||| 00| 0 eng d aBaudron, Frederic et al aFailing to yield? Ploughs, conservation agriculture and the problem of agricultural intensification: An example from the Zambezi Valley, Zimbabwe c2012 ap.393-412. aMar aAgriculture - Zimbabwe aAgriculture aJournal of Development Studies